Cover Image

Physicochemical properties of the complex oxides in Sm-Ba-Me-Cu-O (Me = Fe, Co) systems

N. E. Volkova, K. M. Deryabina, L. Ya. Gavrilova, V. A. Cherepanov


The present work was focused on the studies of crystal structure, oxygen nonstoichiometry, thermal expansion of SmBaCo2−xCuxO6-δ and SmBaFe2−xCuxO6-δ. Values of the oxygen content in complex oxides SmBaCo2‑xCuxО6‑δ were determined over a wide temperature range in air using high temperature thermogravimetry and iodometric titration. Also, chemical stability with respect to Ce0.8Sm0.2O1.9 and Zr0.85Y0.15O1.93 two common solid electrolyte materials used for SOFCs was evaluated.


layered perovskites compounds; thermal expansion coefficient; thermogravimetry and iodometric titration

Full Text:



Maignan A, Martin C, Pelloquin D, Nguyen N, Raveau B. Structural and Magnetic Studies of Ordered Oxygen-Deficient Perovskites LnBaCo2O5+d, Closely Related to the “112” Structure. J Solid State Chem. 1999;142:247-60. doi:10.1006/jssc.1998.7934

Anderson PS, Kirk CA, Knudsen J, Reaney IM, West AR. Structural characterization of REBaCo2O6-δ phases (RE = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Но). J Solid State Sci. 2005;7:1149-56. doi:10.1016/j.solidstatesciences.2005.03.004

Zhang K, Ge L, Ran R, Shao Z, Lio S. Synthesis, characterization and evaluation of cation-ordered LnBaCo2O5+δ as materials of oxygen permiation membranes and cathodes of SOFCs. Acta Mater. 2008;56:4876-89. doi:10.1016/j.actamat.2008.06.004

Shannon RD. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Cryst. 1976;A32:751–67. doi:10.1107/S0567739476001551

Kini NS, Shivashankar SA, Umarji AM, Yelon WB, Malik SK. Effect of synthesis route on the structure of Nd3-xBa3+xCu6O14-2δ (x = 0,1) system: a neutron diffraction study. Solid State Commun. 2002;122(1-2):99–104. doi:10.1016/S0038-1098(01)00521-X

Wende C, Schüpp B, Krabbes G. Phase equilibria and primary crystallisation field for Sm1+yBa2−yCu3O7 at various p(O2). J Alloys Cmpd. 2004;381:320–6. doi:10.1016/j.jallcom.2004.04.093


Copyright (c) 2015 N. E. Volkova, K. M. Deryabina, L. Ya. Gavrilova, V. A. Cherepanov

© Chimica Techno Acta, 2014-2018
ISSN 2411-1414 (Online), ISSN 2409-5613 (Print)

ROAD logo WorldCat logo DOAJ logo BASE logo eLibrary logo